Finding the Third Proportional to 2,100,545 and 4,499,980

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100,545 : 4,499,980 = 4,499,980 : x
2. Step 2: Convert to fraction form
   2,100,545/4,499,980 = 4,499,980/x
3. Step 3: Cross multiply
   2,100,545x = 4,499,980 × 4,499,980
4. Step 4: Simplify right side
   2,100,545x = 20,249,820,000,400
5. Step 5: Solve for x
   x = 20,249,820,000,400/2,100,545
6. Step 6: Final answer
   x = 9,640,269.55